Floor-clamp



UNITED STATES PATENT OFFICE.

H. W. OLIVER, OF VHITNEYVILLE, CONNECTICUT.

FLOOR-CLAMP.

Specification of Letters Patent No. 14,67 6, dated April 15, 1856.

To all 'whom t may concern Be it known that I, H. W. OLIVER, ofWhitneyville, in the county of New Haven and State of Connecticut, haveinvented a new and Improved Clamp for Laying Flooring; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings, making a part ofthis specification, in which- Figure l, is a longitudinal verticalsection of my improvement, the plane of section being through thecenter. Fig. 2 is a section of the same, (m) Fig. l, showing the planeof section. Fig. 3, is a plan or top view of the same.

Similar letters of reference indicate corresponding parts in the severalfigures.

My invention consists in the employment or use of a slidinof jaw andhook operated as will be hereinafter fully shown and described, wherebythe implement is firmly secured to the beam and the board to be nailedpressed irmly up against the adj oining board previously nailed so as toform a close joint.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A, represents a cast iron plate or bed, in which a rod B, is ttedlongitudinally, said rod being allowed to slide freely in cross plates(a) in the plate or bed. To the outer end of the rod B, a jaw or head C,is attached. To one end of the plate or bed A, the end opposite to theend where the jaw or head C, Works, there are attached two upright lipsor ledges (b) (b) in which the fulcra (e) of a lever D, works. The lowerend of this lever below the fulcra (c) is of circular form, the centerbeing taken from the fulcra (o), and teeth (d) are formed upon it, saidteeth gearing into a rack E, which is tted and works in a groove orbetween proper ways in the end of the plate or bed A. The outer end ofthe rack E, is beveled, so as to form a wedge (a) as shown in Fig. 1.

F, represents a bar the upper end of which is fitted in a loop or socketGr, at one side of the plate or bed A. The upper end of the bar F, has aprojection (e) attached to its inner side, said projection passingthrough a slot in one of the lips or ledges (b) as shown clearly in Fig.2.

H, is a rod which has a screw thread cut upon it, and this rod is fittedin a nut (g) at the lower end of the bar F. The lower end o-f the rod H,has a hook (h) upon it, shown clearly in Fig. 2.

The lever D, is connected to the rod B, by a bar I.

The implement is used as follows. The plate or bed A, is placed upon thebeam or joist J, and the lever D, is elevated to a vertical position, ornearly so, as shown in black Fig. l. The head or jaw C, is consequentlydrawn up'to the end ofthe plate or bed A, and the rack E, will be drawninward free from the projection (e) on the bar F. The rod H, is thenscrewed upward in the bar F, and the hook (It) fitted under neath thebeam or joist J. The lever D, is then turned over in the position shownin red Fig. l, and the jaw or head C, will be forced outward against theboard K, which board will be pressed up firmly against the board L,previously nailed to the beam or joist, forming a close joint. As thelever D, is moved in the position indicated in red Fig. l, the rack E,will be forced outward, and the beveled end (a) of the rack will passunder the projection (e) and the bar F, and rod H will be raised acertain distance corresponding with the thickness of the rack, and thehook (k) will be bound firmly against the under side of the beam orjoist, and the plate or bed A, secured firmly upon the beam or joist.

Having thus described my invention, what I claim as new and desire tosecure by Let-- ters Patent, is-

The sliding jaw or head C, and the hook (k) attached or fitted to theplate or bed A, and operated by the lever D, and rack E, substantiallyas described for the purpose set forth.

H. W. OLIVER.

Witnesses CHARLES Ivns, FLORENCE THOMPSON.

